Numba four.

3 recent sales.

Sale 1:

http://backpack.tf/profiles/76561198073863984#!/compare/1491004800/1491091200

Involved other taunts.

Unusable.

Sale 2:

http://backpack.tf/profiles/76561198147094422#!/compare/1492214400/1492387200

http://backpack.tf/profiles/76561198150783829#!/compare/1492300800/1492387200

Sold for a Terror Watt Ballcap(33) and a Stormy Storm Glove(12).

45 total.

http://www.tf2outpost.com/trade/28755510

B/O of 45.

Sale 3:

http://backpack.tf/profiles/76561198147094422#!/compare/1492387200/1492473600

Sold with a Terror Watt Head Warmer(22) for an Ancient Eldritch Hellmet(55).

33 total.

Sellers:

http://imgur.com/a/Mtxjc

1x 11 day unsold at 45.

Ancient Eldritch Hellmet mini:

http://backpack.tf/profiles/76561198147094422#!/compare/1492473600/1492560000

Sold with 6 keys pure for a Burning Festivizer(56).

50 total.

http://backpack.tf/profiles/76561198144848409#!/compare/1490054400/1490140800

1:1 with a Tesla Coil Lil' Biter(~60).

60 total, supportive.

http://backpack.tf/profiles/76561198322845220#!/compare/1489449600/1490918400

Untrace.

http://backpack.tf/profiles/76561198041429090#!/compare/1490140800/1490400000

Untrace.

http://backpack.tf/profiles/76561198022071751#!/compare/1491004800/1491091200

Bulk.

http://backpack.tf/profiles/76561198022071751#!/compare/1490918400/1491004800

http://backpack.tf/profiles/76561198144819017#!/compare/1490918400/1491004800

Appears to be a 1:1 with a Ghosts Belt(57).

57 total, fits in the range.

Calling it 50-60.

Terror Watt Ballcap mini:

http://backpack.tf/suggestion/59038ac80e2cad54af6c7ef9

33 total.

All credits to Umer.

Rolling with 33-45.